title: 10-Methyl-2-oxo-4-phenyl-2,11-di-hydro-pyrano[2,3-a]carbazole-3-carbo-nitrile.
abstract: In the title mol-ecule, C23H14N2O2, the atoms in the carbazole unit deviate from planarity [maximum deviation from mean plane = 0.1018 (8) Å]. The pyrrole ring makes dihedral angles of 4.44 (5), 3.84 (5), 2.18 (5) and 56.44 (5)° with the pyran, fused benzene rings and phenyl ring, respectively. In the crystal, pairs of N-H⋯O hydrogen bonds generate R 2 (2)(14) loops and a C-H⋯N inter-action is also found. Mol-ecules are further linked by a number of π-π interactions [centroid-centroid distances vary from 3.5702 (5) to 3.7068 (6) Å], forming a three-dimensional network.
authors.affiliation: Postgraduate Research Department of Physics, Rajah Serfoji Government College (Autonomous), Thanjavur 613 005, Tamilnadu, India.
authors.forename: A
authors.initials: A
authors.lastname: Thiruvalluvar
authors.forename: E
authors.initials: E
authors.lastname: Yamuna
authors.forename: R
authors.initials: R
authors.lastname: Archana
authors.forename: K J
authors.initials: KJ
authors.lastname: Rajendra Prasad
authors.forename: R J
authors.initials: RJ
authors.lastname: Butcher